2900125520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{407321}}^1$

素因数の和:407423

約数の個数: 40

約数和(自身を含む): 6818570280

約数和(自身を除く): 3918444760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 407321, 814642, 1629284, 2036605, 3258568, 4073210, 6517136, 8146420, 16292840, 32585680, 36251569, 72503138, 145006276, 181257845, 290012552, 362515690, 580025104, 725031380, 1450062760, 2900125520]

約数ペア:

[(1, 2900125520), (2, 1450062760), (4, 725031380), (5, 580025104), (8, 362515690), (10, 290012552), (16, 181257845), (20, 145006276), (40, 72503138), (80, 36251569), (89, 32585680), (178, 16292840), (356, 8146420), (445, 6517136), (712, 4073210), (890, 3258568), (1424, 2036605), (1780, 1629284), (3560, 814642), (7120, 407321)]